Detections
Analytics

4.3.25 Restrict Access to SYSIBM.SYSSCHEMAAUTH

Information

The SYSIBM.SYSSCHEMAAUTH table contains a list of all users that have one or more privileges or access to a particular schema. It is recommended that the PUBLIC role be restricted from accessing this table.

Rationale:

PUBLIC should not have access to see all the users because this could be used as a point of exploit.

Solution

Perform the following to revoke access from PUBLIC.

Connect to the Db2 database.

db2 => connect to <dbname>

Run the following command:

db2 => REVOKE SELECT ON SYSIBM.SYSSCHEMAAUTH FROM PUBLIC

See Also

https://workbench.cisecurity.org/benchmarks/23492

Item Details

Category: ACCESS CONTROL, MEDIA PROTECTION

References: 800-53|AC-3, 800-53|AC-5, 800-53|AC-6, 800-53|MP-2, CSCv7|14.6

Plugin: IBM_DB2DB

Control ID: 8c1d649489a667377e279a7b2c1cd1963b58934609508ff84f5dd39093f90a6b